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What are the roles of the thymus and the lymph nodes in immunity?
Wiki User
∙ 14y ago
The thymus contains large numbers of T cells and scattered dendritic cells, epithelial cells and macrophages. Immature T cells migrate from red bone marrow to the thymus, where they multiple and begin to mature. Lymph nodes filter lymph, which enters a node through one of several afferent lymphatic vessels. As lymph flows through the node, foreign substances are trapped by reticular fibers within the spaces between cells. Macrophages destroy some foreign substances by phagocytosis and lymphocytes destroy other by a variety of immune responses. Plasma cells and T cells that have divided many times within a lymph node can also leave the node and circulate to other parts of the body.
Wiki User
∙ 14y ago
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Is a thymus plays specialized roles in both the lymphatic and ummune systems?
thymus
Which gland plays important roles in both the immune and cardiovascular systems?
The THYMUS GLAND
Does the thymus has roles in the digestive and lymphatic systems?
NO!!..
What has roles in lymphatic and endocrine systems?
thymus
How many lymphnodes in the human body?
the lymphatic system is a very complex and intricate system with many lymphatic tissues, the most common of them being: the lymph nodes. They are usually clustered in the cervical, axillary, popliteal, cubital and inguinal regions. Thus, they are dispersed throughout the body relatively evenly. The lymphatic system has two main roles: to return interstitial fluid back to the blood circulation, and it also has an immune function. Lymph nodes are small fitering structures that filter the lymph fluid and then it is returned to the blood. Any foriegn bodies or debris are stopped at the lymph node and macrophages and other lymphocytes are deployed for phagocytosis. They kill and ingest the forigen particles. Hence, a lymph node usually gets swollen after an infection as the lymphocytes have acummulated and are fighting it. Thus, lymph nodes help to prevent the spread of disease throughout the body and act as part of a defence mechanism. Hence, it is very important to have many lymph nodes dispersed in the body as a defence mechanism should there be an infection. Despite the slow movement of lymph itself, if a pathogenic cell was to circulate through the body, infection would spread and because the lymphatic system is closely linked with the circulatory system, the pathogenic cell will also travel through the bloodstream and can reach any part of the body. Lymph nodes are also the maturation site of various lymphocytes. Lymph nodes become hazardous when a carcinogenic cell is trapped and begins to proliferate in the slow moving fluid at a lymph node. it slowly travels from node to node until the lymphoma spreads. In these cases, the lymph nodes affected are best to be removed in order to prevent further spreading of the cancer. hope this helps. i am a first year PT student from australia.
What plays specialized roles in both the lymphatic and immune system?
Lots of things. This question requires refineing.
What are the 2 roles of nodes in I2C communication?
Two roles of nodes in I2C communication are: master and slave.Master node - node that generates the clock and initiates communication with slavesSlave node - node that receives the clock and responds when addressed by the master
What are the 2 roles of the immune system?
to fight against infection like disease and bacteria e.g lymph node
Why is another name for the immune system the lymphatic system?
The lymphatic system is a network of tubes throughout the body that drains fluid (called lymph) from tissues and empties it back into the bloodstream. The main roles of the lymphatic system include managing the fluid levels in the body, filtering out bacteria, and housing types of white blood cells. Lymph is filtered through the spleen, thymus and lymph nodes before being emptied into the blood. Keeping a balance of fluidBlood vessels tend to seep fluid into surrounding tissue. The lymphatic system drains off any extra fluid to stop the tissues from puffing up. The feet in particular are prone to puffiness. Lymphatic vesselsLymphatic vessels criss-cross the entire body, except for the central nervous system. Some lymphatic vessels have valves (similar to the valves in veins), which stop the lymph from running back the wrong way. SpleenThe spleen is inside the abdomen, just under the diaphragm. This is one of the filtering organs of the blood. As well as removing microbes, the spleen also destroys old or damaged red blood cells. ThymusThe thymus is inside the ribcage, just behind the breastbone. This is another filtering organ of the blood, that contains many white blood cells called lymphocytes. Lymph nodesLymph nodes are found at various points around the body, including the throat, armpits, chest, abdomen and groin. All lie close to arteries. Bacteria picked up from the tissues by the lymph are trapped in the lymph node. White blood cells called lymphocytes can then attack and kill the bacteria. This is why your lymph nodes tend to swell if you have an infection. Viruses and cancer cells are also trapped by lymph nodes. The circulatory system is made up of the vessels and the muscles that help and control the flow of the blood around the body. This process is called circulation. The main parts of the system are the heart, arteries, capillaries and veins. Arteries are tough, elastic tubes that carry blood away from the heart. As the arteries move away from the heart, they divide into smaller vessels. The largest arteries are about as thick as a thumb. The smallest arteries are thinner than hair. These thinner arteries are called arterioles. Arteries carry bright red blood! The color comes from the oxygen that it carries. Veins carry the blood to the heart. The smallest veins, also called venules, are very thin. They join larger veins that open into the heart. The veins carry dark red blood that doesn't have much oxygen. Veins have thin walls. They don't need to be as strong as the arteries because as blood is returned to the heart, it is under less pressure. difference: lymph is blood without red blood corpuscles Similarities: Both are fluid conduit system. One works by contractile pressure the other by convection. both are fluid systems help in cleaning our body
What are the roles of proteins?
I give a some important biological roles of proteins. Immunity-IgG or antibodies protecting us from pathogens. carrier proteins such as hemoglobin transport the oxygen molecule across all the cells for the respiration. structural proteins such as actin and myosin build the body. Functional proteins such as enzymes and hormones control the metabolism and pathways of the cell.
What actors and actresses appeared in Cabaret - 1994?
The cast of Cabaret - 1994 includes: Helena Afonso as Various Roles Mariema as Various Roles Fernanda Baptista as herself Laura Boavida as Various Roles Ana Bola as Various Roles Sandra Caneira as Various Roles Sandra de Castro as Various Roles Maria de Lima as Various Roles Simone de Oliveira as Various Roles Victor de Sousa as Various Roles Dina de Sousa as Various Roles Aldina Duarte as herself Rita Duarte as Various Roles Zita Duarte as Various Roles Henrique Feist as Various Roles Rui Fernandes as Various Roles Piedade Fernandes as Various Roles Adelaide Ferreira as Various Roles Carla Frade as Various Roles Nuno Galamba as Various Roles Lia Gama as Various Roles Paula Guedes as Various Roles Afonso Guerreiro as Various Roles Anita Guerreiro as Various Roles Nuno Guerreiro as Various Roles Fernando Heitor as Various Roles Alexandra Lencastre as Various Roles Silvia Lima as Various Roles Fernando Mendes as Various Roles Eunice Menor as Various Roles Joaquim Monchique as Various Roles Fernando Palaio as Man in Opening Credits Carlos Paulo as Various Roles Alice Pires as Various Roles Carlos Quintas as Various Roles Silvia Rizzo as Various Roles Marcus Rosa as Various Roles Joaquim Salvador as Various Roles Igor Sampaio as Various Roles Fernando Serafim as Various Roles Cristiana Silva as Various Roles Raul Solnado as Various Roles Wanda Stuart as Various Roles Miguel Velez as Various Roles Isabel Wolmar as Various Roles
What is the plural form of roles?
Roles is the plural of role.
